1 Astrology
2.2 Origin
Not Available
Southern and central Africa
2.4 Color
Colorless, White, Brownish, Reddish, Black, Brownish, Black, Colorless, gray, White, Reddish, Brown
Colorless, White
2.6 Streak
2.8 For which Rashi?
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Not Available
2.10 Planet
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2.12 Element of Planets
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2.14 How to Wear?
2.14.2 Finger
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2.14.4 Ring Metal
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2.15 Energy
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2.18 Deities
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2.19 Not to wear with
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2.21 Powers
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2.23 Birthstone
2.23.1 Planetary
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2.24.2 Talisman
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3 Physical Properties
4.1 Tenacity
4.4 Solubility
4.6 Durability
Not Available
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4.8 Specific Gravity
4.10 Fracture
4.12 Cleavage
4.14 Mohs Hardness
5.3 Chemical Composition
Na 3AlF 6Ulrich Henn and Claudio C.
CaAlB 3O 7Michael OâDonoghue , Gems, Sixth Edition (2006)
6 Optical Properties
6.1 Luster
Vitreous, Greasy, Pearly
Vitreous
6.3 Pleochroism
6.4 Dispersion
6.7 Transparency
Gemmological Tables (2004) More from other references
Transparent, Translucent
6.8 Refractive Index
1.338-1.3391.717-1.724
1
3.25
6.12 Optic Character
Not Available
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6.13 Crystal System
6.14 Birefringence
7.2 Clarity
TransparentUlrich Henn and Claudio C. Milisenda
Transparent
8 Benefits
8.1 Physical
8.1.1 Neurological
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8.3.1 Cardiovascular
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8.3.2 Respiratory
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8.3.3 Reproductive
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8.3.4 Digestive
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8.4 Psychology
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8.5 Healing
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8.6 Qualities Associated
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